I had a problem with my pwd this year. This is the first time that I spent the time to drill the axle slots so that they were straight. I had a guy in the machine shop were I work help me line up and drill the holes. My problem was, even after they were drilled it did not seem like I got the axles in straight. The car still pulled to the right. Is there something I am missing? Any help is greatly appreciated.

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Max. Velocity sells a tool (Derby Worx Pro Body Tool) that greatly helps in drilling axles straight. However, no drilling process is 100% straight. You must align wheels by slightly bending the axles or shimming them. Stan Pope has developed a method for shimming. David Meade has published a book:"Ultimate Speed Secrets", that is sold by Max. velocity. Dave describes the way to bend the axles to properly align the wheels. This is THE MOST IMPORTANT part of building a fast racer. It takes times to get it right, but the reward is huge.
Good luck.
Yalda110

Try letting the car roll down a straight board. watch to see which direction it pulls. Pull each wheel out one by one and rotate the axle 90degrees. Youll see that the car will start to pull less with rotating the axles in the right direction. This is the most hated part of building for me but trust me, its worth it. If you have on front wheel raised, then its easier to get the car to steer straight. If you start to find that little sweet spot location for the axle rotation, then your car should roll straight. If the track that you run on has a center rail strip down the track, then let the touching front wheel lightly steer towards the center rail. Very lightly. If your car steers toward the center rail after about 6 - 8 ft then thats usually the right set up. Theory is that you want the car to get down the ramp as fast as possible then ride the center rail lightly on the flat. Good luck

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